Windows Server 2019 Windows Remote Management (WinRM) service must not store RunAs credentials.

STIG ID: WN19-CC-000520  |  SRG: SRG-OS-000373-GPOS-00157 |  Severity: medium |  CCI: CCI-004895,CCI-002038,CCI-002038 |  Vulnerability Id: V-205810 | 

Vulnerability Discussion

Storage of administrative credentials could allow unauthorized access. Disallowing the storage of RunAs credentials for Windows Remote Management will prevent them from being used with plug-ins.

Satisfies: SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00156

Check

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Service\

Value Name: DisableRunAs

Type: REG_DWORD
Value: 0x00000001 (1)

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Disallow WinRM from storing RunAs credentials" to "Enabled".
This website is not created by, run, approved, or endorsed by the U.S. Department of Defense. Use at your own risk. This website is created by open-source software.